Peer review declaration

All papers published in this volume of Journal of Physics: Conference Series have been peer reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing. • Type of peer review: Single-blind / Double-blind / Triple-blind / Open / Other The peer review has been carried out double-blindly, reviewers did not know the authors of the paper under review and the authors did not know who had reviewed the paper. • Conference submission management system: The conference submission management system for the ICoCSIM2019 conference was the Open Conference System (OCS). • Number of submissions received: In total the committee received 111 papers. • Number of submissions sent for review: Out of those received, 105 papers were reviewed. • Number of submissions accepted: Prior to the conference, 49 papers were accepted for presentation. • Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100): The acceptance rate would be: (49/105) X 100% = 47% • Average number of reviews per paper: Average number of reviews per paper was 2. • Total number of reviewers involved: There were 25 reviewers who did the reviews. • Any additional info on review process: • Contact person for queries (please include: name, affiliation, institutional email address) Name: Benny Benyamin Nasution Affiliation: Politeknik Negeri Medan, Indonesia Emai: bennynasution@polmed.ac.id